Site and localization of duodenal ulcers: a study at operation.
D004381:Duodenal Ulcer / Q000601:surgery*; D004386:Duodenum / Q000033:anatomy & histology / Q000473:pathology; D005750:Gastric Juice / Q000503:physiopathology; D006801:Humans; D006851:Hydrochloric Acid / Q000494:pharmacology; D008722:Methods; D011708:Pylorus / Q000033:anatomy & histology
D006851:Hydrochloric Acid